@header-h: 60px;
@side-w: 200px;
@side-bg: #001529;
@header-bg: #001529;
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: @header-h;
  background: @header-bg;
  z-index: 100;
  .action {
    position: absolute;
    height: 100%;
    right: 20px;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
  }
}
.side {
  position: fixed;
  top: @header-h;
  left: 0;
  bottom: 0;
  width: @side-w;
  background: @side-bg;
  overflow: auto;
  padding-bottom: 20px;
}
.content {
  padding: @header-h 30px 20px @side-w+30px;
  background: #f0f2f5;
  min-height: 100%;
}
